Impact of thermal overload on the insulation aging in short duty cycle motors for aerospace

Vincenzo Madonna, Paolo Giangrande, Luca Lusuardi, Andrea Cavallini, Michael Galea

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

20 Citations (Scopus)

Abstract

Electric motors for aerospace applications are often characterised by short-time duty rather than continuous-duty operations. Some of the main requirements for these machines are high torque density and reliability. Considerable torque density improvement can be achieved by supplying the windings with current greater than the rated value and thus thermally overloading the machine for short periods of time. However, if the insulation is overheated, the machine lifetime is shortened, and reliability issues can arise. This paper experimentally investigates the influence of short-time thermal overload on the insulation lifetime of low voltage, random wound electrical machines. The analysis is performed on round enamelled magnet wires coils aged by accelerated thermal cycles, and the results are statistically processed by the two-parameter Weibull distribution. The experimental data is also used for building a lifetime estimation model, which is employed for predicting the lifetime of a motor embedded into an electromechanical actuator for landing gear extension/retraction.

Original languageEnglish
Title of host publication2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538641927
DOIs
Publication statusPublished - 2 Jul 2018
Event2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2018 - Nottingham, United Kingdom
Duration: 7 Nov 20189 Nov 2018

Publication series

Name2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2018

Conference

Conference2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2018
Country/TerritoryUnited Kingdom
CityNottingham
Period7/11/189/11/18

Keywords

  • Electromechanical actuators
  • Lifetime model
  • More Electric Aircraft
  • PMSM
  • insulation
  • reliability

ASJC Scopus subject areas

  • Control and Optimization
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Transportation
  • Energy Engineering and Power Technology
  • Automotive Engineering

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